Watermelon

Watermelons need warm, well-drained sandy loam at pH 6.0-6.8 and a long stretch of summer heat. Incorporate compost and moderate fertilizer before planting, avoiding heavy nitrogen feeding after vines begin flowering.

Sun

Full sun

Water

Even moisture; about 1 in/week including rain

Spacing

48 in

First harvest

75–100 days

Tips

• Sow seeds 1 inch deep in soil at least 70°F, spacing large-vined types 3-5 feet apart.
• Water deeply during flowering and fruit enlargement, then ease watering as fruit ripens without letting vines wilt.
• Give vines room and protect young fruit from wet soil with dry straw or a board.
• Keep flowers accessible to bees and inspect for cucumber beetles and leaf disease.
• Use several ripeness cues together: a creamy yellow ground spot, a dull rind, and a drying tendril nearest the fruit.